Phonographic apparatus



July 16, 1935. E. D. cooK 2,008,097

PHONOGRAPHIC APPARATUS Filed Jan. 31, 1934 0 EZZJwWI/h/ZZC MZZ YI'TTOB/VEK Patented" its is, 1935 UNITED STATES PATENT OFFICE 2,000,001 rnoNoonArmo arrana'rus Ellsworth D. CoohMerchantville, N. J.. assignor to of Delaware Radio Corporation of America, a corporation Application January 31, 1934, Serial No. 709,070

' Claims. (01. z t-2.3)

This invention relates to apparatus foreither recording sound on a moving film or reproducing sound from such a film, and more particularly to the mechanism by means of which the film is cording station over whichxthe film passes under tension, being held in contact therewith by a pressure roller. Among the'features of the recorder as used in practice is an arrangement whereby the aforesaid pressureroller is automatically brought into engagement with the drum when the door of tiierecorder is shut; so that the operator will not be able to run the film through unless the pressure roller is in proper engagement with the drum. Since, however, the door is kept shut evenwhen the recorder is not in use so as to keep dust and other foreign matter from collecting therein, the pressure roller is practically at all times in engagement with the drum. This eventually results in flattening of portions of the rubber or other resilient tire on the pressure roller and renders it unfit for use.

The primary object of my invention is to provide an improved method of insuring proper engagement of the pressure roller with the drum when the recorder is in use, which method will be free from the disadvantages pointed out above.

Another object of my invention is to provide an improved method of controlling the pressure roller so that it will be independent of the door but will, nevertheless, automatically assume proper engagement with the drum when the apparatus is set up for recording.

A further object of my invention is to provide improved controlling mechanism for} the pressure roller which will permit facile threading of' Still another object of my invention is to provide improved mechanism-for controlling the pressure roller in such amanner that its useful life will be lengthened. 1

In accordance with my invention, I provide a control device for the pressure roller which is actuated and itself controlled bythe film magazine. The arrangement is such that when the magazine is mounted in place on the recorder, it automatically effects the release of the pressure roller from-a normally locked position out of contact with the drum whereupon the pressure roller is forced into engagement with the drum and maintained there until the magazine is removed.

,The novel features which I consider characteristic of my invention are set forth with particularity in the appended claims. The'invention itself, however, together with additional objects and advantages thereof, will best be understood from the following description of a specific embodiment, when taken in connection with the accompanying drawing in which the single figure shows-a front view of the recorder with my 'invention applied thereto.

and containing, a driving sprocket 3 which feeds afilm F from and back to a magazine 4 mounted on the support 1. In its passage through the recorder, the film F passes around a drum 5. underptension, being .held in engagement with the drum by means of a roller 6 and a pressure roller 1, the latter being rubber tired and pressing the film directly against the drum 5.

The roller I is mountedon a pivoted bell crank lever 8 to the arm 8a of which is connected a pin 9 free to slide in a guide member ill on the casing I. A compression spring il tends constantly to urge the lever 8 in a counterclockwise direction so that the roller 1 is urged into drum engaging position, as shown in solid lines in the drawing. A second bell crank lever I! has connected thereto a link member or rod l3 which is slidably mounted in a pair of guide members it and I andis connected "to a lever l6 pivoted at ii to the casing I. A pin I8 is pivotally connected to Referring to the drawing, there is shown a casing I provided with a film magazine support 2 the lever l6 and extends through a slot is in the magazine support 2, being constantly urged upforces the latter to move in a clockwise direction against the action of spring 9, thus moving the roller out of drum engaging position and into the hot-dash line position illustrated. However,

when theinagazine l is fastened to the support 2, the pin it. is depressed and with it the lever wardly above the top surface of the support 2 by many other modifications and changes will readily suggest themselves to those skilled in the art. I desire, therefore, that my invention shall not be limited except insofar as is necessitated by the prior art and by the'spirit of the appended claims.

I claim as my invention:

1. In phonographic apparatus of the type employing tape records, an operating station, a tape v azine, means for locking'said roller out of drum support at said station, means adapted to'maintain a tape in engagement with said support, a removable tape holder, and means controlled by said holder for rendering said first named means effective to maintain the tape in engagement with said support.

2. In phonographic apparatus of the type employing tape records, an operating station, a tape support at said station, means movable out of and into tape engaging position and. adapted, in the latter position, to maintain a tape inengagement with said support, a removable tape magazine, and means controlled by said magazine for moving said first named-means into tapeengaging position when the magazine is mounted in operating position in the apparatus; I

3. In phonographic apparatus of the type employing tape records, an operating station, a tape support at said station, means movable-out of and into tape engaging position and adapted; in,

the latter position, to maintain a tape in engagement with said support, a removable tapemagazine, andmeans controlled by said magazine for r moving said first named means into tape engaging position when the magazine is mounted in operating position in the apparatus, said last named means including means for moving said first named means out of tape engaging position when said magazine is removed from operating position.

4. In film phonographic apparatus, a drum, a pressure roller adapted to maintain a film in engagement with said drum, means urging said roller into drum engaging position, means adapt ed to lock said roller out of drum engaging position against the action of said first named means, and means for rendering said last named means effective to lock said roller out of drum engaging position;

5. In film phonographic apparatus, a drum, a pressure roller adapted to maintain a film in engagement with said drum, a removable film magengaging position when said magazine is removed from the apparatus, and means controlled by said magazine and operated thereby when the magazine is mounted in the apparatus for rendering said locking means ineffective to lock said roller out of drum engaging position.

'6. In film phonographic apparatus, a drum, a movable pressure roller adapted to maintain a film in engagement with said drum, means urging said roller into drum engaging position, a removable .fllm magazine, means for locking said roller out of drum engaging position against the action of said first named means when said magazine is removed from the apparatus, and means controlled by said magazine and operated thereby when the magazine is mounted in the apparatus for rendering said locking means. ineffective to locksaid roller out of drum engaging position whereby saidfirst named means is rendered effective to move said roller into drum engaging position.

. ELLSWORTH D. COOK. 

